Hi Folks,
I'm throwing in with Twoxentrix on the first page of this thread and his post, and throwing in with other folks that say the noise (ultrasound or not) and flashy lights just don't work to deter mice, rats, and or field-mice-like critters.
I just buck up, every*night, and put out 4 rat traps "baited" with dryer lint rubbed in dirt and stored with dirt in a zip lock bag to try to attenuate any human smell on*the lint.
I stopped buying and trying various brands of flashy light ultrasound*critters gizmos after countless times finding this under the truck:
https://photos.app.goo.gl/ZytxwsRzBKmd2eMy6
I think all should be able to get to the above photo; if not, let me know; it's a dead mouse in a rat trap right next to a flashy ultrasound critter box.
The trap is empty of dyer lint because*one of his critter friends I didn't*catch took the*lint away after the trap was*sprung.
This my experience for strings of LED lights as well.
So...my experience...maybe I didn't hit on the right critter box...but after five different boxes(?) plus the LED lights and light strings, I just gave up and used the rat traps thinking it*will*attenuate our chances of getting wire harnesses chewed on.
So far so good.*
Logic on the bait.* I don't wanna attract critters with food, so I'm using something I think (?) that they have to get very close to identify as nesting material.
I think I'm in the Field Mouse Hunger Games!*
*
We're out in our truck about 50% of the time for the past 3 years.* So lots of "experiments."
Best to all